Radiator



May m, 1921 J. musm RADIATOR Filed Feb 1, 1925 Patented May 10, 1927.

} 1,628,288 I UNITED STATES PATENT OFFICE.-

JOSEPH TRISKA, OI OMAHA, NEBRASKA.

RADIATOR.

Application filed February 1, 1923. Serial No. 616,349.

My invention relates to the construction of radiators of the classemployed for watercooled internal-combustion engines. It is the objectof my invention to provide a radiator of this class, so constructed thatshould the water therein be frozen, immediately upon startin the enginethe radiator will be thawed su ciently to open a passage through whichcirculation of the water may occur through the radiator to and from theengine. This object of my invention, namely, the provision of aself-thawing radiator, requiring no attention or regulation, is attainedby a relatively slight modification of the construction usually employedin radiators for motor vehicles and the like.

In the accompanying drawings Fig. 1 is a front view of a radiatorconstructed in accordance with my invention, Fig. 2 is a transversesection of the same on the line 22 of 'Fig. 1, andFig. 3 is a detailbottom view of the same.

In the illustrated construction the main portion of the radiator is ofordinary and well-known structure, there being an outer frame-portion 4,anlupper tank or header 5 provided at its rear side with the inlet-pipe6 and at the top having the filling-neck 7 carrying the removable cap 8,a lower tank 9 having connected therewith the outlet-pipe 10, verticaltubes 11 connecting the tanks 5 and 9, and radiating plates or flanges12 extending horizontally across the spaces between the tubes 11.Instead of the tubes 11 and plates 12, the radiator proper, orheatdissipating structure between the upper and lower tanks may be ofthe cellular or other common type, the essentials being the provision ofthin-walled passages for the flow of water from the u per to the lowertank, the water-passages Eeing interspaced with horizontal passages forthe flow of air to carry oif the heat radiated from the water passages.In the usual structure-of radiators of this class, there is anoverflow-pipe arranged so that the upper end :thereof opens within thefilling-nec the pipe being extended through the rear side of the uppertank and thence downwardly, and forming a passage for the escape ofexcess of water from the tank, or for the escape of steam therefrom. Inmy improved construction, the overflow-pipe 13 has the open upper endthereof arranged in theentirely automatic in action and .ing whichfilling-neck 7 in the usual way, but is extended downwardly through theupper tank 5, instead of being carried out through the rear side of saidtank. From the lowerportion of the tank 5 the pipe 13 is extendeddirectly downward through the body of the radiator proper, in theillustrated structure said pipe taking the place of one of thewater-circulating tubes 11, and extending through the lower tank 9adjacent to the outlet-pipe 10. Emerging from the lower tank, theoverflow pipe is turned rearwardly alongside the outletpipe, andterminates adjacent thereto, being directed as shown in Fig. 3 so thatsteam emer ing therefrom will impinge upon the side of said pipe 10.

Freezing of the water in the engine-cooling system of a motor vehicle ismost likely to occur in the lower portion of the radiator, then in thelower tank and outlet-pipe, arid lastly in the upper portion of theradiator, the upper tank, inlet-pipe,'and within the water-jackets ofthe engine itself. It

is customary during the winter season to till i the radiators ofautomobiles with alcoholic or other so-called non-freezing mixtures, butin extremely cold weather such mixtures are apt to become partiallyfrozen into'a slushy mass which will not circulate through the radiator.When the engine is started, after freezing of the water or other liquidmixture in the cooling system, circulation is prevented and as a resultthereof the liquid in the cylinder-jackets and in the pipe leadingtherefrom to the upper tank of the radiator is quickly heated to boilingtemperature, and the steam therefrom rises into the filling-neck andpasses out through the overflow-pipe. Ordinarily, the heat from thesteam so produced will only cause thawing of the lower portion of theradiator after the lapse of a considerabletime, duroverheating andserious injury of the engine may result, as the ders will not beefiiciently cooled until the thawing has proceeded far enough to enablethe water-circulation to be re-established.

With my improved radiator construction, when the watercirculationbecomes stopped by freezing, and steam is produced as abovedescribed, the steam escaping through the pipe 13 will quickly thawthose portions of the radiator contiguous to said pipe, and throughwhich the same passes, including the portion of the lower tank adjacentto the roclietor,'completing o circuit from and iii to the engii iethrough-Which izhewezei'-cii'- solation will at once he re-estoblieherl,even though the side-poriions oi the radiator, which are remote from thepipe 13, remain. frozen. Wiihihe commencenieiiilo'i watercii'culaiion,through eny portion of @lhe reclietoi', oil (longer of injuryto theengine, by

inefiicieni; cooling oi the cylinders, is post, and ii is found inpractice that the ihewing oi" the remaining frozen portions of theiediotoi' will proceeoi very rapidly after she woiei circulation hasbeen storied through on portion iheieoii.

N nziei ordinary ocnormoi conditions, the overflow-Pipe i3 es wronged inaccordance with my inveniion will iunction in ihe usual way, oioinineofl any excess of water when the level in ihe upper tank rises above theend of seid pipe Within the filling necli', and permitting the escape ofsteam shouicl ihe iemperniure of the water become high enough to causeits formation.

Thus, loy the mere extension! of the overflow-pipe ihi'ough the radiuiiseli, parollelling ihe direction of Water-circulation from the inletto the outlet pipes 'iheieoi, the reilieior is automatically cons-co liehe li-llflWMii promptly following ihe staining oi'i the engine; end. thestenccnire lay which the ihowing is efieciecl requires no oiiention hythe user, enii involves o very moilerote expense 1011' its construction.

New, homing described my 1nvonia1on,whet

ll claim and desire to secure by Leiiers Petits lower end clii'ected'iodischarge impingingly upon the outlet-pipe from saiol lower chamber,i'ozc the purposesei fol-eh.

2. in o i-ndieioi' of the class described, the combination with upperand lower ionlis, inlet and onilei; pipes connecting respectively wiihseid ienlis, node conneciing body he- 'ie'een soid m nks heving multiplepassages for the flow oi liqiiid ii'omone to the other; of onoverflow-nine stem-hing in the upper portion oiihe upper tank, thencedescending through seiol tank, through ihe connect ing hotly, thencethrough the lowei tank aio portion ihei'eof adjoining the ooiiel pipe,and ihence directed. to discharge impingingly upon the outlet pipewhereby a flow oi sieoin ihi'ongh soicl overflow-pipe iney serve io ihowfrozen iiqnid in onrl thereby open o continuous' essege through themid:- otoi between the in eiend ouilei pipes theme- Jll iliPlcl

